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Permian Tectonic Evolution in the Middle Part of Central Asian Orogenic Belt: Evidence from Newly Identified Volcanic Rocks in the Bilutu Area, Inner Mongolia
Wang Shijie1; Liu Yang2; Dong Xiaojie1; Xu Zhongyuan1; Wang Wenlong2; Li Shichao1; Shi Qiang1; Cui Weilong3
2019-10-01
Source PublicationACTA GEOLOGICA SINICA-ENGLISH EDITION
ISSN1000-9515
Volume93Issue:5Pages:1281-1299
AbstractIn this study, zircon U-Pb ages, geochemical and Lu-Hf isotopic data are presented for the newly identified volcanic rocks which were considered as Bainaimiao group in Bainaimiao Arc Belt (BAB), Inner Mongolia, which could provide important constraints on the evolution of the northern part of North China Block (NCB) and BAB. Basalt to basaltic andesite and andesite to dacite were collected from two sections, which showed eruption ages of 278.2 +/- 4.1 Ma and 258.3 +/- 3.0 Ma respectively. All samples are characterized by high abundances in Al2O3, LREEs, and LILEs, but depleted in HFSEs. Together with high Mg-# ratios and low K/tholeiite to calc-alkaline series, these features indicated that basalt to andesite was likely derived from relatively low degree partial melting of the subduction-fluid related mantle in the spinel phase. And dacite was mainly from the partial melting of crust, then affected by mantle. All samples barely went through fractional crystallization process with the slight Eu anomaly. Compared with the contemporary basalt in NCB, rocks in BAB have a complex composition of zircon and a more positive epsilon(Hf) (t) value (-6.6-6.4), indicating that they had different magma sources of rocks. Though with different basements, NCB and BAB have become an integrated whole before 278 Ma. Therefore, it could be concluded that NCB and BAB belonged to the active continental margin and the PAO had not closed yet until late Permian and then it disappeared gradually and the CAOB developed into a condition of syn-post collision.
KeywordPermian volcanic rocks Bilutu Bainaimiao Arc Belt North China Block Central Asian Orogenic Belt
DOI10.1111/1755-6724.14361
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project
WOS KeywordNORTH CHINA CRATON ; TRACE-ELEMENT COMPOSITION ; SOLONKER SUTURE ZONE ; U-PB AGE ; CONTINENTAL GROWTH ; CRUSTAL GROWTH ; FINAL CLOSURE ; HF ISOTOPES ; GEOCHEMISTRY ; ZIRCON
Language英语
Funding ProjectNational Natural Science Foundation of China[41872203] ; National Natural Science Foundation of China[41872194] ; China Geological Survey Project[DD2016041-16] ; China Geological Survey Project[DD20190038-2]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000493023200009
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95712
Collection岩石圈演化国家重点实验室
Corresponding AuthorDong Xiaojie
Affiliation1.Jilin Univ, Coll Earth Sci, Changchun 130061, Jilin, Peoples R China
2.China Geol Survey, Tianjin Ctr Geol Survey, Tianjin 300170, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Wang Shijie,Liu Yang,Dong Xiaojie,et al. Permian Tectonic Evolution in the Middle Part of Central Asian Orogenic Belt: Evidence from Newly Identified Volcanic Rocks in the Bilutu Area, Inner Mongolia[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2019,93(5):1281-1299.
APA Wang Shijie.,Liu Yang.,Dong Xiaojie.,Xu Zhongyuan.,Wang Wenlong.,...&Cui Weilong.(2019).Permian Tectonic Evolution in the Middle Part of Central Asian Orogenic Belt: Evidence from Newly Identified Volcanic Rocks in the Bilutu Area, Inner Mongolia.ACTA GEOLOGICA SINICA-ENGLISH EDITION,93(5),1281-1299.
MLA Wang Shijie,et al."Permian Tectonic Evolution in the Middle Part of Central Asian Orogenic Belt: Evidence from Newly Identified Volcanic Rocks in the Bilutu Area, Inner Mongolia".ACTA GEOLOGICA SINICA-ENGLISH EDITION 93.5(2019):1281-1299.
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